平常我们用的原生select下拉框,大部分样式没办法修改,导致在不同的浏览器里面会跟设计图的风格大相径庭。所以为了能让它美化起来,就用jq模拟了一个下拉框,可以随意定义样式。原生的下拉框也保留在div里面隐藏着,方便后台开发人员对其进行操作。
效果图如下:

HTML代码如下:
下拉框美化
不带参数: 初始化语句写了参数: 在div上面写参数: 禁用的样式: 其中一个选项禁用:
CSS样式如下:
@charset "utf-8";
/* 简单reset */
body, ul, li {
margin: 0;
padding: 0;
}
body {
font: 14px/24px Microsoft YaHei;
color: #333;
}
ul { list-style: none; }
a {
color: #333;
outline: none;
text-decoration: none;
}
table {
border-collapse: collapse;
border-spacing: 0;
text-align: left;
}
/* 布局样式,非必须 */
.wrap {
width: 600px;
margin: 100px auto 0;
padding: 20px;
background-color: #d3f3dd;
}
.wrap table th, .wrap table td { padding: 8px 2px; }
.wrap table th {
font-weight: normal;
text-align: right;
}
/* 下拉框样式 必须 */
.select-style ul {
list-style: none;
padding: 0;
margin: 0;
}
.select-style select { display: none; }
.select-style {
position: relative;
display: inline-block;
font-family: Microsoft YaHei;
color: #666;
font-size: 14px;
text-align: left;
vertical-align: middle;
z-index: 50;
}
.select-style.focus { z-index: 51; }
.select-style .slt-wrap {
display: inline-block;
width: 200px;
border: solid 1px #d6d6d6;
vertical-align: middle;
}
.select-style.focus .slt-wrap { border: solid 1px #53a8df; }
.select-style .slt-title {
position: relative;
display: block;
padding: 0 36px 0 5px;
line-height: 30px;
height: 30px;
text-decoration: none;
background-color: #fff;
word-break: break-all;
color: #666;
overflow: hidden;
}
.select-style .slt-title .slt-text {
display: inline-block;
height: 30px;
*cursor: pointer;
}
.select-style .slt-title i {
position: absolute;
right: 0;
top: 0;
display: inline-block;
width: 30px;
height: 30px;
background: url(../images/ico-select.png) 0 0 no-repeat;
*cursor: pointer;
}
.select-style.focus .slt-title i { background-position: 0 -30px; }
.select-style.disabled .slt-title i {
background-position: 0 -60px;
*cursor: default;
}
.select-style .opn-box {
display: none;
position: absolute;
left: 0;
top: 31px;
width: 100%;
}
.select-style.up .opn-box {
top: auto;
bottom: 31px;
}
.select-style .opn-box .opn-list {
position: relative;
_width: 100%;
max-height: 130px;
border: 1px solid #d6d6d6;
background: #fff;
overflow-y: auto;
overflow-x: hidden;
}
.select-style.focus .opn-box .opn-list { border-color: #53a8df; }
.select-style .opn-box .opn-list li {
display: block;
_width: 100%;
padding-left: 5px;
line-height: 26px;
height: 26px;
overflow: hidden;
white-space: nowrap;
text-overflow: ellipsis;
cursor: pointer;
}
.select-style .opn-box .opn-list .selected { background: #d4edfe; }
.select-style .opn-box .opn-list li:hover {
color: #fff;
background: #65abda;
}
.select-style .opn-box .opn-list li.disabled {
color: #cacaca;
background: #f0f0f0;
cursor: default;
}
.select-style.disabled .slt-wrap { border: 1px solid #d6d6d6; }
.select-style.disabled .slt-title {
color: #cacaca;
background-color: #f0f0f0;
cursor: default;
}
.select-style.disabled .slt-title .slt-text { *cursor: default; }
/* 下拉框样式 结束 */
Jquery代码如下:
/**
* Name : 美化下拉框
**/
(function(jQuery){
$.fn.simSelect = function (o) {
o = $.extend({ //设置默认参数
maxNum: 5, //最大显示5个
width: 200, //默认宽200px。为避免过多的设置宽度,尽量依照项目中最常见的宽度设定css样式。
direction: "down", //向下拉,另一个是up
disabled: false //不可用时为true
},o || {});
return this.each(function(){ //构造开始
if($(this).children(".slt-wrap")){ //去重复
$(this).children(".slt-wrap").remove();
};
var $ts = $(this),
$select = $ts.find("select").eq(0),
wid = parseFloat($ts.attr("width")),
num = parseFloat($ts.attr("max-num")),
$sltWrap = $("").prependTo($ts),
$sltTit = $("").prependTo($sltWrap),
$sltText = $(".slt-text", $sltTit),
$opnBox = $("
").appendTo($sltWrap),
$opnList = $(".opn-list", $opnBox);
$ts.addClass("select-style"); //增加一个class专门作为写css样式用
$select.find("option").each(function(i){ //循环生成li标签
var text = $(this).text(),
$li = $("兼容到IE7+(IE6其实也行,只是选项多于5个下面不会出现滚动条)。
以上就是本文的全部内容,希望对大家的学习有所帮助。









